A soft, strangled noise, growing louder until it was a gasping cry, wrung its way up out of Sasuke at that bite. He clung harder, hips tilting and twitching to meet Sam's thrusts. His own teeth clenched hard back together, breaths erratic and shallow.

His fingers dug a little harder into Sam's shoulder blades, and he used the leverage to pull himself a little higher without breaking the hold on his neck, tilting and twisting his body to find the right angle - there. Sam's cock slammed against his prostate, and the sound that burst out of Sasuke's lungs was the loudest, most wanton one he'd made this evening. He shifted to keep the angle steady, thrusting his hips down to meet the other's motions. Again and again, Sam thrust hard against that sweet spot, and within moments Sasuke was screaming.